JP,
As Brian says surely, now that you are admitting that as, your words Sir and not mine "there are only two possibilities as regards the forward view from the cockpit" then the fact that there are, again as YOU state two possibilities here surely the criteria of "there is absolutely no doubt whatsoever" is simply not satisfied.
Or are you now telling us that despite your obvious and freely stated uncertainty, unless of course you are now going to change tack and state for us clearly and categorically what they did see, that in spite of your confusion the verdict of "there is absolutely no doubt whatsoever" is right and proper.